Water motor



T. AND T. F. M. CRISP.

WATER MOTOR. APPLICATION FILED SEPT- 13. I920- Patented May 16 gnoenl'oz 7: R/SPM Quorum;

ZFMCP/JP 2% i 1/ mt T 0 all whom it may concern:

ATENT c nemas cnrsr AND 'r-noims rneivois amnion carer, or JUNCTION, Texas, i

I ASSIGNQRS or onngrnrn-n no JACK wanna, or Junomon, TEXAS.

WAT-E MOTOR.

application filed September '13, 1920. Serial No. 409,894.

Be it known that we, THoMAs CRISP and THOMAS FRANCIS MARION CRISP, citlzens of the United States, residlng at Junction, in

the county of Kimble and State of Texas;

have invented certain new and useful Improvements in Water Motors, of which the following is a specification, reference being had to the accompanying drawings;

This invention relates to water motors. An important object of the invention is to provide in a water motor a novel and efiicient structure materially increasing the value thereof. 1

A further object of the invention is to provide means for preventing water motors of the spiral vane type being rendered less efiicient by the action of the water tending to prevent rotation thereof. To this end We provide a rotatably mounted shaft having attached thereto oppositely directed spiral compound vanes each compound vane consisting of a plurality of smaller vanes arranged transversely of the spiral line of the vane proper.

Other objects and advantages of the in vention will become apparent throughout the course of the following description.

In the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of our invention, and wherein like reference characters designate like parts throughout:

Figure 1 is a plan View of a water motor constructed in accordance with our invention, the casing being partly broken away.

Figure 2 is a detail view showing the mounting of the shaft, and

Figure 3 is an end elevation thereof.

Referring now more particularly to the drawings, the numeral 10 indicates a conduit connected with any suitable water pressure supply, provided at its ends with transverse -members 11 and 12 in which is rotatably Specificationof Letters Patent. I 'p t t m 1 2 sides of the opening l6. The rotatable member of the thrust bearing-is secured to the shaft upon thefreduced extension 14: thereof" and abuts the stationary member 17 through medium of theusual thrust balls. The forward end of the opening 16 is covered by a plate 20. The rear cross member 12 has a similar opening formed therein within which is mounted the stationary member 21 of a thrust bearing. The end 15 of the shaft is threaded and has adjustably mounted thereon the rotatable member 22 of the thrust bearing which engages its stationary member with the interposition of thrust balls.

The shaft 13 has attached thereto diametrically oppositely extending compound vanes or series of compound vanes S each series being composed of a plurality of vanes V angularly disposed with relation to the shaft. Each vane V of a series is approximately scoop-shaped in general outline, the water being received upon the concave face. The surfaces a of adjacent vanes are parallel, and the compound vane as a whole is oblique to the axis or spirally arranged, and each vane of a series is arranged oblique to the spiral of its series. Each of the vanes is slightly concavo-convex, thus forming in each series a plurality of buckets. Each of the spiral series is of sufficient length to form one half turn or more upon the shaft.

In operation of our device the water passing through impinges successively upon each of the buckets of the series to cause rotation of the shaft and vanes. This rotation is not opposed by the water passing through the conduit to any material extent, because of the fact that spaces are formed interme diate the vanes or buckets V. The slight back pressure caused by the action of the water upon these vanes assists in overcoming the longitudinal thrust of the shaft. which is greater than is ordinarily present inthe straight spiral vane construction. In order to overcome the-overbalance of thrust the thrust bearings previously described have been provided. It will be noted that these thrust bearings have their stationaryportions opposing. shifting of the shaft in the direction of passage of the motive fluid and it will furthermore be noted that these thrust bearings are adjustable, to compensate for wear.

It will be obvious that our device by reason of its simplicity of construction and ranged. series of scoop-shaped vanes secured to said shaft, each vane of a series being spaced from the adjacent vanes ofthe same series and being disposed at an angle to the spiral path of the series, the surfaces of adjacent vanes being approximately parallel and the Water being received upon the con cave sides of the vanes, substantially as described.

In testimony whereof We hereunto afiix our signatures.

, TI-IOIVIAS CRISP.

THOMAS FRANCIS MARION CRISP. 

